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Did you use a local console or a remote console? Can you reproduce the issue on both consoles? Can you try to reboot the SCE server and then open the console again?

If the issue could be reproduced, please open Event Viewer (Start -> Run -> eventvwr), and select Windows Logs -> Application. Check if any error message was logged when the issue happened. Please post it here to help us moving on.

I cannot find any clear information in the log file. Some different scenarios may result in this same issue. I would like to suggest that you can reinstall the SCE console to see if it helps. And for your further information, here are some
threads which disscussed the similar issues:

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